Mailbox Provider: core.io [ back to main ] Here's MX record breakdown data for core.io. Did you know? Domain core.io hosts mail for 20 of the top ten million domains. Here are the top 5000 domains hosted by core.io: Rank Domain MX Record MX Domain 1 core.io mx.mail.core.io core.io 2 reco-systems.de mx.mail.core.io core.io 3 beckonaccess.com mx.mail.core.io core.io 4 hellundanders.de mx.mail.core.io core.io 5 pkgsrc.se mx.mail.core.io core.io 6 severina-bessonov.com mx.mail.core.io core.io 7 beckoneurope.com mx.mail.core.io core.io 8 skylime.net mx.mail.core.io core.io 9 frubar.net mx.mail.core.io core.io 10 veit-beck.com mx.mail.core.io core.io 11 tooc24.de mx.mail.core.io core.io 12 tapping-torque-test.com mx.mail.core.io core.io 13 naehkromanten.net mx.mail.core.io core.io 14 familienkosmos-berlin.de mx.mail.core.io core.io 15 shs-gmbh.at mx.mail.core.io core.io 16 aciddisco.de mx.mail.core.io core.io 17 py10.org mx.mail.core.io core.io 18 mtl-medical.com mx.mail.core.io core.io 19 besi-kanu.de mx.mail.core.io core.io 20 xchannel.org mx.mail.core.io core.io This ranking is relative inside of top 10 million results. Find more information about the "top domains" data from host.io. DNS Snapshot date: June 2025 Page generated at: Fri Aug 1 11:05:00 CDT 2025